any of several tropical, freshwater fishes of the family Characidae, often kept in aquariums.
Origin of tetra
shortening of New Latin Tetragonopterus
former genus name. See tetragon
a combining form meaning “four,” used in the formation of compound words: tetrabranchiate.
Also especially before a vowel
Origin of tetra-
combining form of téttara,
neuter of téttares four
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for tetra
Contemporary Examples of tetra
From a purely environmental standpoint, the statistics in favor of Tetra Pak packaging are astounding.
An ambitious Swiss packaging company, Tetra Pak, presents another alternative to Bag-in-Box.
I had my first taste of Tetra Pak wine from a neon green package labeled “Bandit” a couple of years ago.
In addition, a one-liter Tetra Pak weighs less than a pound.
Eva and her husband Hans Kristian Rausing, heir to the $10bn Tetra Pak fortune, were both friends of Prince Charles.
Historical Examples of tetra
A small pink flower of the class Tetra dynamia covered the prairie.
Tetra grammaton, Ahaseel—in the name of the Holy Evangels, spare me!
Tetra- (in words of Greek composition), four; as, Tetracoccous, of four cocci.
British Dictionary definitions for tetra
noun plural -ra or -ras
any of various brightly coloured tropical freshwater fishes of the genus Hemigrammus and related genera: family Characidae (characins)
Word Origin for tetra
C20: short for New Latin tetragonopterus (former genus name), from tetragon + -o- + -pterous, from Greek pteron wing
before a vowel tetr-
Word Origin for tetra-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for tetra
word-forming element meaning "four," from Greek tetra-, combining form of tettares, tessares "four" (see four).
Online Etymology Dictionary, © 2010 Douglas Harper
Composed of or containing four atoms, molecules, or groups:tetrasaccharide.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.